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System calls, Processes, Threads, Inter‐process communication, Concurrency and synchronization. Deadlock. CPU scheduling. Memory management and Virtual memory. File systems. Disks is also under this

$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{2020}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 2 &4&2&2&2&3&2&2&1&1&1&2.1&4
\\\hline\textbf{2 Marks Count} & 4 &1&3&4&4&3&2&2&4&3&1&3&4
\\\hline\textbf{Total Marks} & 10 &6&8&10&10&9&6&6&9&7&\bf{6}&\bf{8.1}&\bf{10}\\\hline
\end{array}}}$$

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Recent questions in Operating System

1 votes
1 answer
4783
Fragmentation is
Fragmentation is a. dividing the secondary memory into equal sized fragments b. dividing the main memory into equal size fragments c. fragments of memory world used in a page d. fragments of memory words unused in a page. Please explain.
Fragmentation isa. dividing the secondary memory into equal sized fragmentsb. dividing the main memory into equal size fragmentsc. fragments of memory world used in a pag...
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24 votes
4 answers
4784
GATE CSE 2014 Set 1 | Question: 33
Assume that there are $3$ page frames which are initially empty. If the page reference string is $\text{1, 2, 3, 4, 2, 1, 5, 3, 2, 4, 6}$ the number of page faults using the optimal replacement policy is__________.
Assume that there are $3$ page frames which are initially empty. If the page reference string is $\text{1, 2, 3, 4, 2, 1, 5, 3, 2, 4, 6}$ the number of page faults using ...
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47 votes
6 answers
4790
GATE CSE 2012 | Question: 31
Consider the $3$ processes, $P1, P2$ and $P3$ ... $P1, P3, P2$ FCFS: $P1, P2, P3$ RR2: $P1, P3, P2$ FCFS: $P1, P3, P2$ RR2: $P1, P2, P3$
Consider the $3$ processes, $P1, P2$ and $P3$ shown in the table. $$\small \begin{array}{|c|c|c|} \hline \textbf{Process} & \textbf{Arrival Time} & \textbf{Time Units Req...
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26 votes
3 answers
4791
GATE CSE 1998 | Question: 25-a
Free disk space can be used to keep track of using a free list or a bit map. Disk addresses require $d$ bits. For a disk with $B$ blocks, $F$ of which are free, state the condition under which the free list uses less space than the bit map.
Free disk space can be used to keep track of using a free list or a bit map. Disk addresses require $d$ bits. For a disk with $B$ blocks, $F$ of which are free, state the...
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26 votes
4 answers
4796
GATE CSE 1998 | Question: 2.16
The overlay tree for a program is as shown below: What will be the size of the partition (in physical memory) required to load (and run) this program? $\text{12 KB}$ $\text{14 KB}$ $\text{10 KB}$ $\text{8 KB}$
The overlay tree for a program is as shown below:What will be the size of the partition (in physical memory) required to load (and run) this program?$\text{12 KB}$$\text{...
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22 votes
3 answers
4797
GATE CSE 1998 | Question: 2-9
Formatting for a floppy disk refers to arranging the data on the disk in contiguous fashion writing the directory erasing the system data writing identification information on all tracks and sectors
Formatting for a floppy disk refers toarranging the data on the disk in contiguous fashionwriting the directoryerasing the system datawriting identification information o...
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29 votes
4 answers
4798
GATE CSE 1998 | Question: 1.32
A computer has six tape drives, with $n$ processes competing for them. Each process may need two drives. What is the maximum value of $n$ for the system to be deadlock free? $6$ $5$ $4$ $3$
A computer has six tape drives, with $n$ processes competing for them. Each process may need two drives. What is the maximum value of $n$ for the system to be deadlock fr...
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19 votes
4 answers
4799
GATE CSE 1998 | Question: 1.31
A counting semaphore was initialized to $10$. Then $6 P$ (wait) operations and $4V$ (signal) operations were completed on this semaphore. The resulting value of the semaphore is $0$ $8$ $10$ $12$
A counting semaphore was initialized to $10$. Then $6 P$ (wait) operations and $4V$ (signal) operations were completed on this semaphore. The resulting value of the semap...
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32 votes
3 answers
4800
GATE CSE 1998 | Question: 1.30
When the result of a computation depends on the speed of the processes involved, there is said to be cycle stealing race condition a time lock a deadlock
When the result of a computation depends on the speed of the processes involved, there is said to becycle stealingrace conditiona time locka deadlock
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